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Pirelli row back from more extreme tyre pressure limits for Italian GP

F1's tyre supplier decide against big increase in minimum tyre pressures for Monza, with smaller rise along with camber changes and tyre blanket tempeature tweaks revealed

Pirelli tyres
Image: Pirelli have tightened tyre restrictions at Monza

Pirelli have loosened restrictions on the tyre pressures teams can run at the Italian GP after opposition to more stringent measures from drivers and teams.

Following the two high-speed tyre blowouts at Spa two weeks ago, it was revealed on Thursday at Monza that Pirelli, F1's sole tyre supplier, had recommended an increase of five PSI in the minimum pressure that tyres can be run at. Changes to camber limits were also communicated to teams.

However, world champion Lewis Hamilton warned the proposed five PSI increase could lead to "disaster" due to increased tyre wear, while Fernando Alonso labelled it "strange" that such a significant rise could be introduced without having been tested with the current compounds.

But after deciding to reduce those minimum numbers on Thursday night, it has since emerged that Pirelli have agreed to row back further and instead impose just a one PSI raise front and rear.

That brings the limits to 19.5 PSI at the front and 21 at the rear.

The degree of negative camber the teams can run has also been reduced to three degrees at the front and two at the rear to protect the tyres.

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Anthony Davidson and Simon Lazenby look ahead to this weekend's Italian Grand Prix.

Pirelli have also mandated that tyre blankets can only be used to a maximum of 110c.

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The Italian manufacturer is still able to revise its recommendations again after Friday practice.

The changes for Monza come after the conclusion of Pirelli's investigations into Sebastian Vettel's tyre failure at Spa in which the Italian firm pointed to a combination of excessive debris on the track and prolonged tyre use.

The outcome of Pirelli's investigations were backed by the FIA and Formula One Management with the latter releasing a statement saying: "Pirelli has been a first class partner of Formula One during the five seasons in which it has been the Official Supplier of Tyres to the FIA Formula One World Championship and we continue to have full confidence in the safety, quality and suitability of its tyres."

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